Lightroom 6.1 is the first version that supports the xt-10. If you want to edit the native files in Lightroom, you should either buy a perpetual license to LR 6 (it's cheaper if you upgrade from a previous version) or subscribe to CC indeed. However there is a free option too, which is to download the free dng converter from Adobe and convert your raw files to dng. They will work in lightroom after that.

Thank you for responding. I think it makes more sense for me to join for $9.99 a month. Can you tell me how to do that. Does the CC version just integrate into my current version 5.7? Is this only a cloud-based program? Will I need to be on line to use it? Thank you again for your support.

If I remember correctly, you just sign up at the adobe website. Then it will offer you to download the creative cloud app. Install and launch that and log on using the Adobe account that you used to sign up for CC. In the creative cloud app, you can then download Lightroom CC 2015 and Photoshop. Lightroom CC 2015 is a completely new app so it won't delete your Lightroom 5.7. When you now launch Lightroom 2015, it will copy and upgrade your Lightroom 5.7 catalog file, so you should have all your existing images and edits intact in the new catalog.